Hazy, hot and humid with an isolated thunderstorm, high 93

The weather pattern is finally changing for western Massachusetts heading into the 4th of July, unfortunately it will not be in the form of more refreshing conditions. Hazy, hot and humid weather will take control of the region tomorrow and will continue through the holiday weekend. High temperatures in Springfield topped out at 89 degrees today, and will reach the mid-90s Thursday through Sunday.

A large area of high pressure over the Atlantic Ocean shifts closer to the East Coast tomorrow. The large upper-level trough that has kept our weather unsettled and muggy for the last several days will then get bumped back to the west, as well. This will pave the way for a strong tropical flow of air from the south. The humidity will keep the heat index in the upper-90s through the next several afternoons.

An isolated, late-day thunderstorm is also possible Thursday through Sunday. The best chance of anything popping up will be late in the afternoon at the hottest part of the day, and then any showers should fizzle out quickly with the setting sun. This will be good news for the 4th of July fireworks in Springfield, as well as other towns through the weekend.